AT200058B - Process for increasing the resistance of concrete bodies to chemical corrosion - Google Patents

Process for increasing the resistance of concrete bodies to chemical corrosion

Info

Publication number
AT200058B
AT200058B AT200058DA AT200058B AT 200058 B AT200058 B AT 200058B AT 200058D A AT200058D A AT 200058DA AT 200058 B AT200058 B AT 200058B
Authority
AT
Austria
Prior art keywords
resistance
concrete
increasing
chemical corrosion
concrete bodies
Prior art date
Application number
Other languages
German (de)
Original Assignee
Ocrietfabriek N V
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ocrietfabriek N V filed Critical Ocrietfabriek N V
Application granted granted Critical
Publication of AT200058B publication Critical patent/AT200058B/en

Links

Landscapes

  • Aftertreatments Of Artificial And Natural Stones (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Erhöhung der Widerstandsfähigkeit von Betonkörpern gegen chemische Korrosion 
Im Patent Nr.   1830010   ist ein Verfahren zur Erhöhung der Widerstandsfähigkeit von Betongegenständen gegenüber chemischer Korrosion beschrieben worden, wonach mindestens lufttrockene Betongegen- 
 EMI1.1 
 zugsweise trockener als bloss lufttrocken gemacht. 



   Voraussetzung für das Verfahren gemäss dem Patent Nr.   183. 010   ist, dass das für die Herstellung der Betonkörper verwendete Bindemittel freien Kalk enthält oder freien Kalk im Verlaufe des Abbinde- oder Härtevorganges bildet. Dann findet mit   SiF,   die folgende Reaktion statt : 
 EMI1.2 
 
 EMI1.3 
 

 <Desc/Clms Page number 2> 

 derjenigen eines normal gehärteten Betons verschieden ist. 



   Weiters zeigte es sich, dass die in   dieser Weise behandelten Betonkörper   nicht nur eine erhöhte Wider- 
 EMI2.1 
   kate, wie Kaliumsilikat, an der Reaktion mit SiF, teilnehmen, kann man vorteilhafterweise auch solche 4   Betonkörper der Behandlung unterziehen, denen-auf Grund der neuen   Erkenntnis - zusätzliche   Mengen solcher Silikate beigefügt wurden. Diese Silikate können als solche dem Betonmörtel zugesetzt werden oder sie können während des Härtungsprozesses, z. B. im Verlaufe der erwähnten Dampfbehandlung, aus 
 EMI2.2 
 Wichtigkeit, das erfindungsgemässe Verfahren unter Verwendung eines Betons auszuführen, der unter Einwirkung von   hocherhitztem Dampf   in einem abgeschlossenen Raum erhalten wurde.

   Ein solcher Beton kann nämlich leicht in vollkommen trockenem Zustand erhalten werden, so dass die Schwierigkeit einer langdauernden Vortrocknung sowie die Bildung von Sprüngen in den Betonkörpern vermieden werden kann. 



    PATENTANSPRÜCHE :    
1. Anwendung des für die Behandlung von freien Kalk enthaltenden Betonkörpern bekannten, der Erhöhung ihrer Widerstandsfähigkeit gegen chemische Korrosion dienenden Verfahrens, bei welchem die Körper in zumindest lufttrockenem, vorzugsweise in noch trockenerem Zustand, ohne Anfeuchtung, mit 
 EMI2.3 
 enthalten.



   <Desc / Clms Page number 1>
 



  Process for increasing the resistance of concrete bodies to chemical corrosion
Patent No. 1830010 describes a method for increasing the resistance of concrete objects to chemical corrosion, according to which at least air-dry concrete counterparts
 EMI1.1
 preferably made drier than just air-dry.



   The prerequisite for the process according to patent no. 183,010 is that the binding agent used for the manufacture of the concrete body contains free lime or forms free lime during the setting or hardening process. Then the following reaction takes place with SiF:
 EMI1.2
 
 EMI1.3
 

 <Desc / Clms Page number 2>

 is different from that of normal hardened concrete.



   Furthermore, it was found that the concrete bodies treated in this way not only increased resistance
 EMI2.1
   cates, such as potassium silicate, take part in the reaction with SiF, one can advantageously also subject those 4 concrete bodies to the treatment to which - based on the new knowledge - additional amounts of such silicates have been added. These silicates can be added as such to the concrete mortar or they can be added during the hardening process, e.g. B. in the course of the steam treatment mentioned
 EMI2.2
 Importance of carrying out the method according to the invention using a concrete which has been obtained under the action of highly heated steam in a closed space.

   Namely, such a concrete can easily be obtained in a completely dry state, so that the difficulty of prolonged pre-drying and the formation of cracks in the concrete bodies can be avoided.



    PATENT CLAIMS:
1. Application of the known for the treatment of concrete bodies containing free lime, serving to increase their resistance to chemical corrosion, in which the body in at least air-dry, preferably in an even drier state, without moistening
 EMI2.3
 contain.

 

Claims (1)

2. Anwendung des Verfahrens nach Anspruch 1 auf Beton, der durch Behandlung der ursprünglichen, EMI2.4 2. Application of the method according to claim 1 to concrete, which is produced by treating the original EMI2.4
AT200058D 1955-05-21 1956-05-17 Process for increasing the resistance of concrete bodies to chemical corrosion AT200058B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL200058X 1955-05-21

Publications (1)

Publication Number Publication Date
AT200058B true AT200058B (en) 1958-10-10

Family

ID=19778294

Family Applications (1)

Application Number Title Priority Date Filing Date
AT200058D AT200058B (en) 1955-05-21 1956-05-17 Process for increasing the resistance of concrete bodies to chemical corrosion

Country Status (1)

Country Link
AT (1) AT200058B (en)

Similar Documents

Publication Publication Date Title
AT200058B (en) Process for increasing the resistance of concrete bodies to chemical corrosion
AT124737B (en) Contact or carrier body for cracking processes u. like
DE1152649B (en) Building material mixtures containing lime or cement and alkylpolysiloxane for the manufacture of water-repellent products
DE851180C (en) Process for the production of a starch product from potato starch
DE1112940B (en) Process for the production of silicon-containing hydrosols which transform into a hardenable gel
DE662982C (en) Process for increasing the hydraulic properties of slag
DE3041294C2 (en) Moldings made of plaster of paris which have been rendered hydrophobic using alkylsilanes and a method for rendering these plasterboard moldings water-repellent
AT207308B (en) Process for making building materials and cement moldings water-repellent which contain free lime
DE654433C (en) Process for the production of light, porous moldings from cellulose-containing materials and cement
AT236729B (en) Process for the chemical oxidation of magnesium powder
AT130434B (en) Process for the production of a silicate capable of base exchange.
DE655735C (en) Process for the production of lower leather
AT118634B (en) Process for improving the hydraulic properties of Portland cement.
AT121995B (en) Process for removing a lead layer covering metal bodies.
US1440352A (en) Method of treating oil containing water
AT240128B (en) Process for the chemical oxidation of aluminum powders or aluminum alloy powders
AT142415B (en) Process for the production of asbestos cement products that are resistant to water and aqueous solutions.
AT136995B (en) Process for the production of a cementitious hydraulic binder from blast furnace slag and lime.
DE848923C (en) Process for reinforcing lightweight concrete u. like
DE1205880B (en) Process for improving the fire resistance of building materials and components made of gypsum or anhydrite
AT103094B (en) Process for the production of cell wall structures in high voltage systems and transformer stations.
AT229212B (en) Process for the surface treatment of materials made of plaster of paris or calcium carbonate bricks
DE695058C (en) Substitute for pozzolans as hydraulic aggregates
DE499640C (en) Process for the production of bodies from peat that insulate against heat and electricity
AT202508B (en) Process for improving and regulating the setting of magnesia cement mortar, e.g. B. of stone wood